Vehicles drive past as a display of Aurora Borealis (Northern Lights) is seen over the village of Mestervik in northern NorwayReutersAerial view of a river in Peru's Amazon region of LoretoReutersThe volcano on Mount Ontake in Japan erupts. Image was created with a smartphoneGettyPro-democracy demonstrators hold up their mobile phones during a protest near the Hong Kong government headquartersDale de la Rey/AFPUmbrellas are seen at the site of a protest on the main road leading to the financial district in Hong Kong. As tensions subsided, weary protesters dozed or sheltered from the sun beneath umbrellas, which have become a symbol of what some are calling the "umbrella revolution"REUTERS/Bobby Yip) (CHINA - Tags: POLITICS BUSINESS SOCIETY CIVIL UNREST - RTR4893USatirical artist Kaya Mar displays his latest works depicting Boris Johnson and David Cameron outside the venue of the Conservative Party conference in BirminghamAFPWorkers install the "Unconditional Surrender" sculpture by American artist Seward Johnson outside the Caen Memorial, a museum known for its extensive collection documenting the Normandy landings in 1944ReutersA customer of the Headhunters Barber Shop and Railway Museum in Enniskillen, Northern Ireland, gets a haircut from station master Nigel JohnstonCharles McQuillan/Getty ImagesA man brandishing what appears to be a gun parades a hostage out onto the balcony of a room on the 13th floor of the Saint Peter Hotel in Brasilia. The hostage was handcuffed for hours and wearing what appeared to be an explosive vest...Reuters...Police detain the man who held a hotel employee hostage in Brasilia. Authorities identified the man as Jac Souza de Santos, who had been staying at the hotel since Saturday. A police spokesman said the man was not clear about his demands. "He was always threatening to explode something. The threat was constant." The spokesman said the weapon was a toy gun, but authorities are still trying to determine if the vest held actual explosives.AFPAn American who calls himself "Hunter" aims his rifle near the town of Yasynuvata. With his face hidden behind a camouflage balaclava and an assault rifle slung over his shoulder, "Hunter" looks like other separatist fighters in eastern Ukraine. What distinguishes him from his brothers in arms in the Vostok (East) battalion, an irregular pro-Russian militia fighting government forces, is his American accent - and English is the only language he knowsReutersA US Air Force KC-10 Extender refuels an F-22 Raptor fighter aircraft prior to strike operations in SyriaReuters